using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;

namespace ConsoleApplication1{
    class Program{
        static void Main(string[] args){
            Console.WriteLine("Írj be 1 szót");
            string read = Console.ReadLine().ToLower();

            if(read.Contains('a') || read.Contains('e') || read.Contains('i') || read.Contains('o') || read.Contains('u')) {
                Console.WriteLine("Van benne magánhangzó");
            }else{
                Console.WriteLine("Nincs benne magánhangzó");
            }

            List<string> otbetus = new List<string>();
            string longest = "";
            int wordCounter = 0, lineCounter = 0;
            using(StreamReader input = new StreamReader("szoveg.txt")){
                for(string line = input.ReadLine(); line != null; line = input.ReadLine(), ++lineCounter) {
                    int lineLenght = line.Length;
                    if(lineLenght > longest.Length) {
                        longest = line;
                    }
                    if(lineLenght == 5) {
                        otbetus.Add(line);
                    }
                    int mghCounter = 0;
                    for(int k = 0; k < lineLenght; ++k) {
                        char temp = line[k];
                        if(temp == 'a' || temp == 'e' || temp == 'i' || temp == 'o' || temp == 'u') {
                            ++mghCounter;
                        }
                    }
                    if(lineLenght / 2 < mghCounter) {
                        ++wordCounter;
                        Console.Write(line + " ");
                    }
                }
            }

            Console.WriteLine();
            Console.WriteLine("A leghoszabb szó: " + longest + ", hossza: " + longest.Length);
            Console.WriteLine("Mgh-s szavak száma: " + wordCounter);
            Console.WriteLine("Összes szó: " + lineCounter);
            Console.WriteLine(wordCounter + "/" + lineCounter + ", ez százalékban {0}%\n", ((float)wordCounter / lineCounter * 100).ToString("0.00"));

            Console.WriteLine("Írj be 1 szórészletet");
            string meh = Console.ReadLine();
            foreach(string check in otbetus) {
                if(check.Contains(meh)) {
                    Console.Write(check + " ");
                }
            }
            Console.WriteLine();

            using(StreamWriter output = new StreamWriter("letra.txt")){
                List<string> used = new List<string>();
                List<string> buffer = new List<string>();
                foreach(string check in otbetus) {
                    string threeLetters = check.Substring(1, 4);
                    if(!used.Contains(threeLetters)) {
                        used.Add(threeLetters);
                        foreach(string sajt in otbetus) {
                            string trimmed = sajt.Substring(1, 4);
                            if(trimmed.Equals(threeLetters)) {
                                buffer.Add(sajt);
                            }
                        }
                        if(buffer.Count > 1) {
                            foreach(string print in buffer) {
                                output.WriteLine(print);
                            }
                            output.WriteLine();
                        }
                        buffer.Clear();
                    }
                }
            }
            Console.WriteLine("Press enter to exit...");
            Console.Read();
        }
    }
}